Organizers
- RunPrescott
- RunPrescott.com
- RunShadyside
- RunTIME Racing Services
- RUNVEGASRUN
- RunWalkRoll
- Runway 5K to End Poverty
- Runway Events Ltd
- RunWell
- Runwithpaula Events, Inc.
- Runyon Sports Complex
- Rural Health Initiative (RHI)
- Rural Running Limited
- Rush County Little League
- Rush-Copley Healthplex
- Russell Forest Run
- Russell Martin Foundation
- Russell UMC
- Russell Wilson Passing Academy
- Russian Education Center
- Russian Orthodox Youth Association
- Rustic Youth Camp
- Ruston Girls Softball Association
- Rutgers Football Camp
- Rutgers Recreation
- Rutgers University Softball
- Rutherford Housing Partnership.com
- RWQB Training
- Ryan Bonser Golf
- Ryan Coleman Foundation
- Ryan McGuyre VBC, LLC
- Ryan P. Kishbaugh Memorial Foundation
- Ryan Taraskiewicz, PGA | The Club at Olde Cypress
- Ryano Event Management
- Ryan's Run for Central Night Shelter
- Ryan's Run Tampa Relays
- RyanStrong
- Ryerson Soccer Network, Inc.
- Rylie J's Boo and Brew 5K
- Ryssbergets IK
- RYTFA
- Rythmique Music School